Rodney,
Search the archives. About two months ago (or so) one of us posted links for a Canadian series of videos on the 1st gen's. The second (#2) video has engine work and I think it includes the valves. Kind of old and grainy....but does give a pretty good idea.
The manuals here are in pdf format. Almost all PC's will open them. Adobe Reader Download | Free PDF viewer for Windows, Mac OS, Android
The only other avenue would be to search the archives for "valve adjustment". I would be really surprised if there isn't a post with pictures and more of one of our members doing a valve adjustment and documenting it for us....
Check back and let us know how you faired after this....
david